Built to be trusted with a chart.
Access, policies, approvals, and records — each designed so a reviewer can see what happened, who decided, and which version of the payer's rule applied.
We sign a Business Associate Agreement before any patient data enters the system.
The walkthrough runs on synthetic cases. The BAA comes first; your policies are loaded second; patient information enters only after both.
Seven controls a reviewer can point to.
Invite-only access
There is no sign-up. Every account is created by invitation for a named person at a named practice.
Two-factor authentication for administrators
Administrator accounts require a second factor to sign in.
Versioned payer policies with effective dates
Every check runs against a stored copy of the policy with its version and effective date, so a packet can be traced to the rule that governed it.
Provider-signed letters
Letters go out under your provider's signature. AppealOS drafts and checks; the provider reviews and signs.
A human approval gate on every document
Export is locked until a person in your practice approves. Nothing leaves without that step, and the approval is recorded with the version it applied to.
Full audit trail
Who uploaded, corrected, generated, approved, and exported — recorded on every case, in order, with the time.
Encryption and role-based access
Encrypted in transit and at rest. Access is scoped by role within each practice, and your documents are not used to train AI models.

Approval is the control. Submission is yours.
The payer copy exists only after a person approves the packet. Drafts and the internal record carry the review disclaimer on every page; the payer copy carries none — the approval itself is the control. Nothing is transmitted from AppealOS.
Live product, synthetic case.
Five lines we hold.
AppealOS is an administrative software tool. It is not a medical device and does not provide medical, legal, or billing advice.
No automatic submission. Nothing is transmitted to a payer from AppealOS. You send the payer copy through the payer's own channel.
No medical decisions. AppealOS drafts and checks against the payer's published criteria. Your clinicians decide.
No training on your documents. Your charts, denials, and letters are not used to train AI models.
No outcome promises. We stand behind the packet — complete, cited, defensible — not the payer's verdict.
No real patient data on this website. Every image and sample document here is synthetic — invented patients and practices, real public payer policies.
Questions for your compliance review?
Bring them to the walkthrough, or write to us. A person answers within one business day.